Industry Insights & AgTech Solutions
As the global agricultural sector faces strict restrictions on chemical herbicides, soil degradation, and the rise of herbicide-resistant weeds, the demand for eco-friendly, non-chemical weed control technologies has skyrocketed. Autonomous weeding robots equipped with AI vision systems are leading this revolution. However, achieving high-speed, targeted weed elimination requires robust optical sources tailored to specific biophysical mechanisms.
To power next-generation laser weeding equipment, Hangzhou BrandNew Technology delivers specialized high-power fiber-coupled diode lasers operating at two complementary yet independent wavelengths: 450nm Blue Light (100W/200W) and 1470nm Infrared Light (270W).
The 450nm wavelength coincides with the primary absorption peak of chlorophyll a and b inside plant cells. When exposed to high-density 450nm blue light, plants suffer immediate photochemical damage: optical energy rapidly disrupts the photosynthetic machinery, destroying cellular membranes without relying entirely on intense heating.
To support different robot movement speeds and field densities, BrandNew provides two tailored 450nm models:
100W 450nm Fiber Coupled Diode Laser (FC450DZ100):
- Optical Power & Beam Quality: Delivers 100W CW output at 450 ±10nm through a fine 105µm fiber core (0.22 NA) with an SMA905 connector. The small fiber core ensures exceptional power density and a tight focal spot for delicate micro-weeding near crop stems.
- Electrical & Thermal Efficiency: Operates with a low threshold current (Ith=0.3A) and a compact water-cooling structure requiring a 5L/Min flow rate to maintain continuous field performance.
200W 450nm Fiber Coupled Diode Laser (FC450DZ200):
- High Power for High-Speed Field Ops: Outputs 200W CW through a 200µm fiber core (0.22 NA). This model is engineered for high-speed automated weeding rigs needing higher energy delivery per millisecond.
- Integrated Aiming Beam: Features an optional red aiming beam to assist optical alignment, vision sensor calibration, and system safety checks during field testing.
Mechanism 2: Thermal Ablation with 1470nm High-Power Infrared Lasers
While 450nm relies on light absorption by photosynthetic pigments, the 1470nm wavelength targets plant tissue through an entirely different physical mechanism: water absorption.
- Deep Photothermal Destruction: Water molecules possess a strong absorption band at 1470nm. When a high-power 270W 1470nm laser hits target weeds, internal cell sap instantly boils, causing rapid localized cell rupture (thermal necrosis) at the plant's apical meristem (growth point) or root collar.
- All-Weather & Non-Selective Performance: Unlike pigment-dependent wavelengths, 1470nm thermal ablation acts independently of plant color or leaf pigmentation, making it effective against thick-stemmed weeds, mature weeds, and non-green plant parts.
Matched Power Driver System for 450nm Lasers
Integrating high-power blue diode lasers into autonomous agricultural equipment requires precise multi-circuit current management.
To streamline integration for OEM manufacturers, BrandNew provides a dedicated Matched Driver System tailored specifically for 450nm lasers:
Directly resolves complex multi-loop driving requirements-such as the 3A×8 configuration for the 200W model or 3A×4 for the 100W model-ensuring balanced current distribution across all channels.
Delivers fast pulse-on-demand response, allowing the AI vision system to trigger high-speed laser pulses precisely when weeds are detected.
Includes built-in over-current interlocks and thermal protection to ensure long-term stability in harsh outdoor field conditions.
Partner with BrandNew for Sustainable AgTech Innovation
As global smart farming transitions from chemical spraying to high-precision photonics, BrandNew Technology supports agricultural OEM integrators with reliable, long-lifespan diode laser hardware. All units undergo stringent burn-in and optical testing at 25℃ to guarantee stability during full-scale field deployment.
For technical specifications, customized fiber lengths, or matched driver inquiries, please contact our sales team.
Email: wp@brandnew-china.com
Whatsapp/Wechat:+ 86 181 5840 0345
